I bought one 64gb and it has printed the same but it actually has 32gb when i looked into my windows system. why is it so?

Have you looked at how the flash drive is set up? There's an outside chance that it merely has 1 primary partition set up as 32gb and 'unallocated' space that is the other half of your storage. For this you'll need to look at the drive with Disk Management in Windows to see how partitions are configured.

Is the usb-a connector backwards compatible with usb 2.0 ports?

Yes, it should be but without the same transfer speed as 3.0.

How many pictures will the 256gb sandisk hold?

A 256 GB Flash Drive will hold roughly 150,000 pictures. Or, it will hold about 50,000 pictures and 35-40 hours of movies together. At least according to my math from investigating data about this.

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Sandisk SDDDC3-256G-G46 USB Memory 256GB

Sandisk SDDDC3-256G-G46 USB Memory 256GB

Product ID: 732800803

Details

ハードウェアインターフェイス
USB
ブランド
SanDisk
メモリストレージ容量
256 GB
書き込み速度
2x
特徴
リバーシブル、暗号化。

⚡150 MB/s read speed

🔄2-in-1 USB Type-C & Type-A

🔐Built-in encryption

Description

🚀 Dual-Drive Power: Connect, Transfer, Secure — Anytime, Anywhere!

SECURE YOUR DATA - Keep your files safe with built-in encryption, perfect for sensitive work documents and personal memories.
LIGHTNING FAST TRANSFERS - Boost your productivity with up to 150 MB/s read speeds—because every second counts.
COMPACT ON THE GO READY - Ultra-lightweight (3.7g) with a swivel design and keyring hole—carry your digital life wherever you go.
SEAMLESS DUAL COMPATIBILITY - Effortlessly switch between USB-C smartphones, tablets, Macs, and USB-A PCs without missing a beat.
AUTOMATIC BACKUP SPACE SAVER - Free up your phone’s storage instantly with automatic backup of photos, videos, and contacts.

The SanDisk Ultra Dual Drive Go 256GB is a sleek, ultra-portable USB flash drive featuring a reversible 2-in-1 USB Type-C and Type-A interface. It delivers fast 150 MB/s read speeds and built-in encryption to protect your data. Designed for seamless file transfers between modern smartphones, tablets, Macs, and PCs, it includes a swivel design with a keyring hole for easy portability and automatic backup capabilities to free up device storage.

Specifications

ASIN	B07YYJL21Z
Amazon 売れ筋ランキング	パソコン・周辺機器 - 2,405位 ( パソコン・周辺機器の売れ筋ランキングを見る ) USBメモリ・フラッシュドライブ - 50位
GTIN (Global Trade Identification Number)	00619659177638
UPC	619659177638
おすすめ度	5つ星のうち4.1 36,897 レビュー
カラー	ブラック
ハードウェアインターフェイス	USB
ブランド	SanDisk
メモリストレージ容量	256 GB
メモリメディアストレージ容量	256 GB
メーカー名	SanDisk
メーカー型番	SDDDC3-256G-G46
ユニット数	1.0 個
互換デバイス	タブレット, タブレット。, モバイル。
内蔵メモリータイプ	USB
取替え可能電話機モデル	USB TYPE-C接続可能な256GBに対応したデバイス
品目の寸法（D x W x H）	45奥行き x 12幅 x 9高さ mm
商品の追加説明1	リバーシブル、暗号化。
商品の重量	3.7 グラム
型番	SDDDC3-256G-G46
書き込み速度	2x
特徴	リバーシブル、暗号化。
読み取り速度	150 メガバイト毎秒
読み込み速度	150 メガバイト毎秒
通信・接続インターフェース	USB

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